Patent · US Active

Filter medium

US9861918B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

Sefar AG · CH

Inventors

Isabell Erlenmaier · Sankt Gallen, CH
Christoph Maurer · Bad Schwartau, DE
Christian Gurtner · Village of La Jolla, US
Christian Dietmayer · Gettorf, DE

Key dates

Filing date	Feb 17, 2014
Grant date	Jan 9, 2018
Priority date	—
Expiry date	May 30, 2034

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD10B2505/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a filter medium having a filter fabric on an upper side and a support fabric on a lower side, wherein the filter fabric and the support fabric have different yams and together take the form of a double weave, wherein the filter fabric has a pore count of 4000/cm2 or greater, preferably 5000/cm2.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.